Automating dropdown downloads on Selenium & python

Question

I am new to python and selenium. Trying to automate download of files from the dropdown menu on the below link for the first time. The code gets stuck after page loads i.e the drop down does not work and gives me an error. Sorry if my code looks clunky. Any help is appreciated.

Thanks

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from selenium.webdriver.support.select import Select
import time

s=Service("C:\\python\\chromedriver.exe")
driver = webdriver.Chrome(service=s)
driver.maximize_window()
driver.get('http://www.amfiindia.com/research-information/aum-data/classified-average-aum')

#monthname=driver.find_element(By.XPATH,"//*[@id='AaumDate']")
monthdd=Select(monthname)
monthdd.select_by_value('01-Jan-22')
time.sleep(3)

typename=driver.find_element(By.XPATH,"//*[@id='AumType']")
typedd=Select(typename)
typedd.select_by_visible_text('Scheme category wise')
time.sleep(3)

mfname=driver.find_element(By.XPATH,"//*[@id='AumMFName']")
mfdd=Select(mfname)
mfdd.select_by_visible_text('All')
time.sleep(3)

driver.find_element("class name","sprite-inter go-btn").click()